why would you cross two weapons that perform completely different tasks, and fire completely different calibers? The M16A1 Fires the 5.56 NATO, which doesn't have nearly enough KE nor stopping power to take down a target at 1000+ yards, while the dragnov fires the 7.62x54mm Russian round, which has plenty of KE to take down a target at sniping range.

I was just thinking about those two weapons, and it sorta just popped into my head. And anyway, isn't that true with Most multi-task weapons? The Steyr AUG performs well as both a Sub-Machine Gun, Automatic Rifle, and Sniper Rifle. The only thing I have yet to understand is what type of ammunition my gun should hold. .45 and 5.56 are definately out,so I'm trying to decide between 7.62X54 and .50

I was just thinking about those two weapons, and it sorta just popped into my head. And anyway, isn't that true with Most multi-task weapons? The Steyr AUG performs well as both a Sub-Machine Gun, Automatic Rifle, and Sniper Rifle. The only thing I have yet to understand is what type of ammunition my gun should hold. .45 and 5.56 are definately out,so I'm trying to decide between 7.62X54 and .50

The stryer AUG isn't really a multitask weapon. It comes in about a dozen variants, which isn't very "multitask" if you need to carry a sniper and sub machine gun, its not very effective.

If I were designing this weapon, I would put the 7.62x51 NATO as the standard. Not too big, not too small. The .50BMG is rediculous. What are you planning on killing? elephants?